Ultrasonic Testing Methods are non-destructive testing techniques that use high-frequency sound waves to detect flaws in materials. A transducer emits ultrasonic waves, which travel through the material and reflect back when they encounter a boundary, such as a defect or the material's surface. The time it takes for the waves to return is measured, allowing technicians to assess the material's integrity. These methods are widely used in various industries, including aerospace, manufacturing, and construction, to ensure safety and quality. Ultrasonic testing can identify issues like cracks, voids, and inclusions without damaging the material, making it a valuable tool for quality control.